Question

3 boys spent an average of $3.20 each. 3 boys and 2 girls spent an average of
$3.50 each. How much did the 2 girls spend in total?​

Answer 1

Step-by-step explanation:

Average: 4b + 3G = Rs. 120

sum: 4b + 3G = 120×7 = Rs. 840

Average: 4b = 150×4 = Rs. 600

Sum of Girls = 840 - 600 = Rs. 240

Average of Girls = 2403 = Rs.80